Radio set connecter



Feb; 26; 1929; 1,703,651

M. ALDEN RADIO SET CONNECTER Original Filed Oct. 5, 1926 2 Sheets-Sheet 1 lllllilm L x Feb. 26, 1929. 1,703,651

M. ALDEN RADIO SET CONNECTER Original Filed Oct. 5, 1926 ZShaets-Sheet 2 k uliu-lllllllllnunn H I; "1?

\ I A a Patented Feb. 26,1929.

UNITED STATES PATENT OFFICE.

MILTON" ALDEN, OF SPRINGFIELD, .MASSACHUSETTS, ASSTGNOR ,TO THE ALDEN.MANU- FACTURING COMPANY, OF BROCKTON, MASSACHUSET IS, A CORPORATION -01 MASSACHUSETTS.

Original application filed October 5, 1926,

. My invention relates to what may be termed auxiliary connecters or adapters for what are commonly termed vacuum tubes.

The main object of'my invention is to produce a device for convenient insertion between a vacuum tube and its socket by means of which electrical access may be had to various terminals of the socket or various terminals of the tube.

One object is to make possible the leading of the plate or grid terminals or the terminals ordinaril associated with the plate or grid from a tu e socket in any set without disturbing the wiring of this set. I

Another ob ect is to bring out connections from any stage, radio frequency, detector or audio frequency of a receiver for introduction into, and further amplification in another receiver without disturbing the permanent wir ingof either, thus makin it possible to cross connect or bridge so that or instance the output of the radio frequency circuit of "one set may be introduced into the detector circuit of another set and further amplified by the audio frequency circuits of this latter.

In many receivers the radio frequency and detector components are-satisfactory but the faithfulness and power of the audio frequency components has not kept pace with the art so that by means of my inventiona satisfactory audio frequency amplifiermay be connected in without disturbing the original receiver.

Another object is that the last stage of audio frequency ma be cut out and an ex-' terior power ampli er substituted without change of the receiver.

Another object is to make easy the testing namo sn'r conNEc'r-En.

Serial No. 189,657. Divided and this application filed March 16, 1928. Serial in. 262,081.

mechanically breaking the existing connec- -t1ons.

It will be evident that by meansof my in- I vention a large amount of experimentation and temporary alteration can be conducted with any radio. receiver and at the same time within a few moments and without the use. of tools this receiver may be put back into its original condition.

Fig. 1 is a plan view of a device embodying one form of my invention.

Fig. 2 is a sectional view of the same on the plane of the line 2-2 of Fig. 1.

Fig. 3 is a perspective view of the same de- Fig. 4- is a plan view showing another form of my invention.

Fig. 5 is a sectional view on the plane of the line 55 of Fig. 4.

Fig. 6 is a bottom view of the same form.

Fig. 7 is a plan view of the up er part with the conducting members omitted Fig. 8 is a vertical sectional View on the plane of. the line 88 of Fig. 4 and showing a tube base in lace.

The particu ar form shown on Sheet 1 is intended primarily as a convenient means for inserting additional voltages or other apparatus or devices in the plate and grid circuits of certain tubes of receiving sets which are provided with the so-called push pull type of socket, which do not happen to be provided with separate leads for the insertion of special voltages, such as are required by UX112, UX171, UX210, or other forms of so-called power amplifier tubes.

In this form the insulating body consists of the base 9 and the top plate 10. The base may be conveniently formed of molded insulation and the top in this articular form may be, for instance of co uloid and the parts may be secured together in any suit able manner. I

The base carries 4 prongs 11, 12, 13 and 14 which in this particular case are similar in size and positioning with the terminal prongs of a UX201 type vacuum tube.

The conducting strip 15 has its foot riveted to the upper end of the prong 11 and has a spring contact portion 16 bent at an angle to engage the side of an inserted tube prong. The conductor 17 has a foot riveted to the upper end of prong 12 and a spring contact tip 18 bent over to engage the side of a tube prong.

The circuit terminals 19 and 20 have their ends of the prongs 13 and 14. The circuit terminal 21 is riveted at 22 to the base and has.

its inner end'bent over to form a spring contact 23 for engagement with a tube prong. The circuit terminal 24 is similarly riveted at 25 to the base and provided with a spring terminal tip 26 on its inner end for engage ment with a tube prong. The spring contacts 16, 18 and 23 are all substantiallythe same as 26.

The base 9 is preferably provided with a flange 28 which receives the rim of the top plate 10. The terminals 19, 20, 21 and 24 extend through this flange 28 and between the overlapping surfaces of the top plate and base so as to facilitate connection with the wires for whatever purpose the device is used.

The parts of the body are provided with passages 29 for the prongs of the tube to-be used and such passages and the corresponding contacts will be of the proper number, size and relative location to accommodate the particular-tube for which the device is intended.

In this particular form shown the larger prongs 11 and 12 are intended to carry the cathode heating current so that the contacts 16 and 18 are intended for engagement with the filament rongs of the vacuum tube (not shown). T e smaller prongs 13 and 14 correspond to the plate and grid pron s of the vacuum tube and their circuit term1nals19 and 20 are adapted to receive the conductors 31 and 32, which may be led to the positive terminal 01 the additional grid battery and to the negative of the additional plate battery, respectively. The conductors 33 and 34 are connected to the terminals 24 and 21, respectively, and may lead .to the remaining terminals of the grid and plate batteries. The other contacts 26 and 23 are adapted to receive the grid and plate prongs of the tube (not shown).

Some of the rongs, for instance, 11 and 14 may be exten ed through the top plate 10 and riveted over to hold it in place.

The forms shown on Sheet 2 are particularly intended to facilitate the use of UX120 vacuum tubes with additional plate and grid.

The shell or base 40 is of the size and shape similar to the base of a UV199 tube and is provided with a locking pin 41 and contact studs or prongs 42, 43, 44 and 45 corresponding to the pins and contacts upon the base of said tubes. The top plate 46 has suitable perforations 47, 48, 49 and 50 adapted to receive the prongsof the UX120 type of tube, as shown in Flg. 8.

The conducting strip 51 has a contact portion 52 which extends into the passage'or recess 47 for one of the tube prongs. This strip is anchored in place by the upper end of the pin 52 which is riveted over as shown in Figs. 4 and 5 to hold the cover plate 53 in place. The lower end 54 of the pin 52 is inserted into the upper end of the prong 44 to which it is electrically connected.

The conducting strip 55 has a contact portion 56 adapted to be engaged by a tube prong 57 when inserted. The foot of the conducting strip 55 is held in place; by the riveted upper end of the pin 58 which also assists,

tact tip 64 and is held in place by the riveted up er end of the pin 66.

n this particular arran ement contacts 52 and 56 are intended for t e filament prongs of the tube and the other contacts 61 and 64 for the plate and grid prongs.

Two of the flexible conductor leads and .71 have'their endspassed through the side walls of the shell 40 beneath the top plate 46 and electrically connected with the upper ends of the prongs 43 and 45 respectively. The conductors 72 and 73 have their inner ends connected respectively to the pins 62 and 66 nd hence afl'ord connections to the grid an filament contacts 61 and 64.

It will thus be seen that this form of device enables the insertion in the circuit of extra batteries or other apparatus between the grid contact of the socket (not shown) and the grid prong of the tube and/or between the plate contact of the tube socket and the plate prong of the tube.

It should be understood that the devices as herein illustrated may be used for various electrical connections and substitutions, and that the broad invention may be embodied in other forms and for various numbers, sizes and arrangements of tube prongs. The forms of construction herein shown are broadly claimed in my Patent #1,688,772 issued October 23, 1928, from which case this application is a division.

I claim:

1. A connecter comprising an insulating base having projecting prongs for insertion in a socket, spring contacts having feet connected to some of said prongs, an insulating cover member having passages for tube prongs, and a conducting member having a spring contact in line with one of said passages and having a terminal portion extending out from between the cover and base.

2. A connecter comprising an insulating base having projecting prongs for insertion in a socket, spring contacts having feet connected to some of said prongs, an insulating cover member having passages for tube prongs, a conducting member having a spring contact in line with one of said passages and having a terminal portion extending out from between the cover and base, and a conducting member having a part connected to another of said prongs and having a terminal portion extending out from between the cover and base. i

- 3. A connecter comprising an insulating base member having projecting prongs for engagement with the contacts of a socket, a top member having passages for tube prongs, conductors passing'between said top and said base and connected to some of said base prongs, other conductors having contact tips in line with some of said passages and having terminal port-ions extending out from between said base and top members.

4. In a vacuum tube connecter, a base of insulating material having four contact prongs positioned as in a'vacuum tube, an insulating top having four perforations registering with the prongs of a vacuum tube, contacting members arranged so as to engage said tube prongs, circuit wires connected to a number of said base prongs, circuit wires connected to a number of said contacting members, and means for eifectin connection between the remainder of saidiase prongs and their corresponding contacting members.

5. In a connecter for vacuum tubes an insulating base having four prongs arranged substantially as in a vacuum tube, said base having four apertures registering with the prongs of. a vacuum tube, contacting members projecting into said apertures, circuit conductors connected to a number of said base. prongs, circuit conductors connected to a number of said contacting members, and means for efiecting direct connection between other contacting members and their associated base prongs.

6. A vacuum tube connecter comprising an \I insulating base having projecting prongs for having terminal portions extending out from between the cover and base, the first mentioned contacts being in line with the other passages.

7. A vacuum tube connecter comprising an insulating base Inemberhaving projecting prongs for engagement with the contacts of a socket, a top member having passages for tube prongs, conductors passing between said top and said base and connected to some of said base prongs, others of said conductors having contact tips in line with some of said passages and having terminal portions extending out from between said base and top members, and conductors secured to other base prongs and having contact tips in line with some of said assages;

8. A vacuum tu e connecter comprising an insulating base having projectin prongs for insertion in a socket, a contact aving a foot connected to one of said prongs, an insulating cover member secured to the base and having passages for tube prongs, a conducting member having a contact in line with one of said passages and having a terminal portion extending out from between the cover and base, the first mentioned contact being in, line with another passage and a conducting member having a part connected to another of said base prongs and havin a terminal portion extending out from ietween the cover and base.

9. In a vacuum tube'connecter, an insulating base having openings adapted to receive the prongs of a tube, prongs permanently secured to said base, a conducting member connected to one of said base prongs and terminating in a contact in one of said openings, a circuit terminal extending from the side of said base and terminating in a contact in another of said openings, and a circuit terminal extending from the side of said base and connected to another of said base prongs.

, MILTON ALDEN. 

